mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 (Mohs scale); Color: Pale orange to deep honey orange; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions.

Hardness: 3 (Mohs scale)
Color: Pale orange to deep honey orange
Luster: Vitreous to waxy

Identified July 14, 2026More mineral →

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Physical properties

Hardness: 3 (Mohs scale); Color: Pale orange to deep honey orange; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions.

Formation & geological history

Formed through sedimentary processes or in hydrothermal environments. It is often created through chemical precipitation when calcium-rich water evaporates or changes temperature.

Uses & applications

Widely used in decorative carvings, tumbled stones for chakra healing and metaphysical purposes, and as an acid neutralizer in chemical industries.

Geological facts

Crystals of calcite are known for double refraction, where light passing through a clear specimen splits into two rays. Common orange calcite often appears translucent and becomes more vibrant when polished.

Field identification & locations

Can be identified in the field by its softness (can be scratched by a copper coin) and its effervescent reaction to dilute hydrochloric acid. Found globally, with high-quality specimens frequently coming from Mexico and Brazil.